User Manual

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The Bumblebee kernel supports the following types of memory resources:
 ILM：
 The Bumblebee kernel supports ILM access via a proprietary AHB-Lite bus or
SRAM interface if an Instructon Local Memory (ILM) interface is configured.
 The size of ilm can be configured.The ilm interface has independent
address ranges. You can configure the specific base address. See section
2.4 Learn more about it.
 The ILM is implemented by the SoC system integrator and can generally be an
on-chip SRAM or on-chip for storing instructions.
Flash.If you use the AHB-Lite interface, to achieve optimal performance,
ILM should follow the AHB protocol rules and return instructions in the
next cycle after receiving the address.
 DLM：
 The Bumblebee kernel supports DLM access via a proprietary AHB-Lite bus or
SRAM interface if a Data Local Memory (DLM) interface is configured.
 The size of dlm can be configured.The dlm interface has a separate address
range, and the user can configure a specific base address. 2.4 Learn more
about it.
 The DLM is implemented by the SoC system integrator and can generally be
an on-chip SRAM for storing data.If you use the AHB-Lite interface, for
optimal performance, the DLM should follow the AHB protocol rules and
return data in the next cycle after receiving the address.
2.7. Bumblebee kernel private device
Figure 1-1 As shown in the Bumblebee kernel's Core hierarchy, in addition to uCore,
it also includes the following private devices: